Leasing vs Buying a Car: Advantages for High-Income Families

By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.

The main advantages of leasing a car instead of buying are a lower monthly payment, no resale hassle, and a new car under warranty every few years. Buying usually costs less if you keep the car seven or eight years or more. For a household earning $750,000 or more in California or Washington, the dollar gap between the two is small relative to income, so the decision should turn on how long you keep cars and how many miles your family drives, not on tax write-offs that a W-2 family generally cannot take.

Below is how the trade-off works for high-income W-2 parents with young children, what has changed in the tax rules since 2025, and a worked example on an $80,000 family SUV.

Leasing vs buying: the advantages side by side

What the tax rules actually allow a W-2 family

Much of what is written about leasing assumes a business owner. For a family whose income is W-2 pay and RSUs, three rules matter for 2026.

• A personal lease is not deductible. Lease deductions apply to business use of a car reported by a business. Driving to the office is commuting, and the IRS states that commuting costs are not deductible (IRS Publication 463). School runs and weekend trips are personal use.
• The new car loan interest deduction does not reach this income. The One Big Beautiful Bill Act created a deduction of up to $10,000 a year of interest on a loan for a new, US-assembled vehicle, for 2025 through 2028. Lease payments do not qualify, and the deduction phases out for joint filers with modified adjusted gross income (MAGI) over $200,000 (IRS). It is reduced by $200 for each $1,000 over that line, so it is gone at $250,000 of MAGI (P.L. 119-21, §70203).
• The EV lease discount is over. Many leases used to pass through a $7,500 commercial clean vehicle credit to the driver. That credit is not available for vehicles acquired after September 30, 2025 (IRS). An older comparison that counts it is out of date.

So for this family, leasing vs buying is a cash-flow and holding-period decision. Taxes enter only through sales tax and through what the cash would have earned if you had not spent it.

How sales tax works on a lease in California and Washington

California. When a leasing company buys the car for leasing (on a resale certificate), it reports tax “based on the rental payments to the lessee,” so you pay sales tax on each monthly payment rather than on the full price up front. If you later buy the car at the end of the lease, “tax generally applies to the purchase amount” (CDTFA). Buying outright means paying sales tax on the whole price on day one.

Washington. Sales tax is also reported on each lease payment. Washington adds a motor vehicle sales/use tax, which is 0.5% for 2026 (it was 0.3% through 2025), and lease payments in the first 36 months qualify for a partial exemption from the voter-approved public safety component of local sales tax; payments after month 36 do not (WA DOR). A lease longer than 36 months costs a little more in tax in Washington for that reason.

Worked example: an $80,000 SUV for a Palo Alto family

Assumptions (illustrative, not quotes): married couple, $950,000 of W-2 and RSU income, two children aged 4 and 7, an $80,000 three-row SUV, 12,000 miles a year. Lease: 36 months, $3,500 due at signing, $1,050 a month including tax. Purchase: cash, 9% local sales tax, the car is worth 55% of its price after 3 years and 25% after 8 years. Cash not spent on the car earns 4% a year after tax. Out-of-warranty repairs in years 4 to 8: $6,000.

Two things stand out. Over three years, leasing wins clearly, because the steepest depreciation happens early and you skip the sales tax on the full price. Over eight years, buying wins, but only by about $4,800, or roughly $600 a year. On a $950,000 income that is well under 0.1% of pay. The lease line also ignores the growth the lessee gives up on monthly payments, which would narrow the gap slightly further.

The state matters at the margin. California taxes all capital gains as ordinary income, with no lower rate (FTB), and its top rate is 13.3% (2025), so the after-tax return on cash you keep invested is lower. That makes paying cash slightly less costly for a California family than the same math in Washington, where there is no tax on wages for 2026 and long-term capital gains above the standard deduction ($278,000 for 2025) are taxed at 7%, rising to 9.9% on taxable gains above $1,000,000 (WA DOR). Washington also adds a 9.9% income tax on AGI over $1,000,000 from 2028 (WA DOR).

Reading a lease quote: the money factor

A lease quote shows a “money factor” instead of an interest rate. Multiply it by 2,400 to get a rough annual rate: a money factor of 0.0025 is about 6%. Compare that with what your bank or credit union would charge on a car loan, and with what your cash earns. Also check the residual value (the price at which you can buy the car at the end), the acquisition fee, the mileage cap and the charge per extra mile. The monthly payment alone hides most of this.

The decision for a family with young children

Leasing tends to fit when:

• You reliably replace cars every three to four years anyway.
• You are buying an EV and do not want to carry the resale risk of fast-changing battery technology.
• One parent may relocate for work within a few years, and a known exit date is worth more than the lowest total cost.

Buying tends to fit when:

• You keep cars seven years or more. Many families with a 4-year-old and a 7-year-old keep the “car-seat car” until the youngest is out of a booster.
• You drive more than the lease cap. Weekend trips to Tahoe or the Cascades add miles quickly.
• The car will take a beating. Spills, sand and car-seat indentations are normal with small children and can be billed at turn-in.

Paying cash versus financing a purchase is a separate question. If a loan rate is below what your cash reliably earns after tax, financing can make sense. If your cash would otherwise sit in a checking account, it usually does not. Check where your emergency reserve lives before you use it for a car; our guide on taking money out of a high-yield savings account covers the mechanics.

Common mistakes we see

• Counting a tax deduction that does not exist. A family car leased by W-2 employees is not a business expense, and the car loan interest deduction phases out completely at $250,000 of joint MAGI.
• Comparing monthly payments only. Compare the total cost over the years you will actually keep the car, as in the table above.
• Selling RSUs to pay cash without checking the tax. Shares that have risen since vest carry a gain; in California that gain is taxed as ordinary income. Use cash, or shares with little gain, first.
• Underestimating miles. Families with young kids usually drive more than they expect, and excess-mile charges add up at turn-in.
• Using an old EV comparison. The $7,500 lease pass-through ended for vehicles acquired after September 30, 2025.

What to document for your kids

Your children will see which car you drive. They will not see why. As Kevin Luu puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.”

A car is one of the first big money decisions a child can understand. A one-page Decision Memo answers four questions: what you compared, what it cost in total, why you chose to lease or buy, and what would make you choose differently next time. Filed in your FamilyKnowledge® Library, it becomes a reference your kids can use when they face the same choice at 25. Our Age Five Wealth Education work shows how families turn decisions like this into lessons at each age, and family governance covers how to record them.

Questions families ask

Is it smarter to lease or buy a car if we have a high income?

At $750,000 or more, income is rarely the deciding factor because the cost difference is small relative to pay. Decide on holding period and miles. If you replace cars every three years, leasing is usually cheaper. If you keep cars seven or eight years, buying usually costs less. Neither choice gives a W-2 family a tax deduction for personal use.

Can we buy our leased car at the end?

Usually yes, at the residual value written into the contract. In California, sales tax generally applies to that purchase amount. Buying out makes sense when the residual is below what similar used cars sell for, or when you have gone well over the mileage cap and would otherwise pay excess-mile charges.

Should we lease a car for our teenager later?

That is years away for most of our families, but the same math applies: a teen driver’s car is usually kept a long time and driven hard, which favors buying a reliable used car. Insurance for a new driver is often the larger cost, so get a quote before choosing the car.

Next step

Before your next car, write down how many years you will keep it and how many miles you drive a year, then run the five-line comparison above with real quotes. If you want the car decision to sit alongside your RSU sales, cash reserves and tax plan, our tax management page explains how Age Five Family Office™ handles it. This is general education, and the right move depends on your family’s full picture.

Written by

Kevin Luu

Co-Founder and Chief Learning Officer, Bright Advisers

Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.

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